It's that time again! Some of the biggest names in Hollywood stepped out to celebrate Halloween 2013, dressed as film characters, other A-listers, comic superheroes and much more! Check out some stars -- including Hilary Duff, Vanessa Hudgens and John Stamos -- who went the extra mile to get decked out for some of the biggest Halloween parties of the season.
The former Revenge star and her husband dressed as Karl Lagerfeld and his cat Choupette for Halloween. The couple was spotted having fun at the Casamigos Halloween Party in Beverly Hills, Calif., on Friday, Oct. 25.